Duplicating-machine.



n. HYAMS. DUPLICATING MACHINE. APPLICATION FILED MAY 15, 1914- PatentedJan. 18, 1916.

1 OFFICE.

DAVID arms, on NEW YORK, N. Y.

DUPLICATING-MACHINE.

T 0 all whom it may concern:

Be it known that I, DAVID HYApis, a citizen of the United States, and aresident of Xew York city, county and State of Xew York, have inventedcertain new and useful Improvements in Duplicating-Machines, of whichthe following is a specification.

This invention relates to a duplicating machine more particularly to amachine for making duplicate copies from a gelatinous material adaptedto absorb an original writing in ink.

To the accomplishmentof the above objects and to such others as mayhereinafter appear. the invention comprises a rotary drum for holding asheet of gelatinous material. means for pressing sheets of paper againstsaid gelatinous material and means for stripping the sheets of paperfrom said gelatinous material.

Referring to the drawings. Figure 1 is a side elevation of a machineembodying my invent-ion. Fig. 2 is a top view of Fig. 1. Fig. 3 is adetail view of the drum. Fig. i is a detail view partly in section on"an enlarged scale of the presser roller and stripping rollers.

In the drawings: A designates the base of the machine. and B the framesor standards which support the drum C. so that it can be rotated bymeans of a removable crank D.

In the prese'nt instance and according to the present invention the drumC is arranged to detachably hold on its outer surface a sheet- E coatedon oneside with a the present instance, preferably made of spring metaland extends acrossvthe face of the drum. The ends of the. clamp G arebent over the sides of the drum and secured in place by means of setscrews K which engage the slots L in the plates M situated on oppositesides of the drum. The screws K can be set any place along the slots Lto Specification of Letters Patent. t m Ja.n 1 1 Application fileti May15, 1914. Serial No. 838,628.'

v adaptthe clamp G tovarying lengths of sheets.

The :clamp H which holds theother end of the gelatinous sheet E to thedrum C is also preferably made of spring metal and extends across theface of the drum, the ends of the clamp being bent over the sides of thedrum and secured in place by means of set screws N.

The clamp H is provided in the present instance with a feeding member 0the object of which will be described later. In the made integral withone side of the clamp H and when in normal position it assumes theraised position shown in F i'g. 1, and in dotted lines in Fig. 4.

\ The standards B are provided with hearing supports P in which isadjustably mounted the spring pressed roller Q which is adapted to pressblank sheets of paper against the surface of the gelatinous sheet E sothat the blank sheets will take the ink impression contained on thegelatinous sheet E. j

The standards B are also provided with bracket members R which support afeed ing table S upon which blank sheets are placed to be fed into themachine, the table S being preferably placed adjacent the lower edge ofthe roller Q as shown in Fig. 1.

a The drum C of the machine is placed in its starting position byturning the crank D until the spring pressed roller Q rests upon thefeeding member 0 thereby compressing the same as shown in Fig. 4. Inorder to hold the drum in its normal starting position the top of thefeeding member 0 is provided with a concave projection T as shown inFig. i. The projection is easily forced past the roller Q when it isdesired to start the machine due to the action of the sheet Theprojection placed some distance away from the edge of the feeding member0 and also away from the edge of the clamp H so that when the feed-- ingmember 0 passes but from. underneath the roller Q the upward morement ofthe feeding member will raise the edge of the paper W as shown in dottedlines in Fig. 4. On the further rotation of the drum the raised edge ofthe paper is engaged by two stripping rollers X which strip the paper IVoff the gelatinous strip E.

The stripping rollers X are preferably driven by means of suitable gearsY at the same speedas the periphery of the drum so that the paper W willbe drawn off ina uniform manner ontothe'table a. In order to insure theedge of the paper W being engaged by the stripping rollers X a suitableadjustable guide 6 is provided as shown in Fig. I for accomplishing thispurpose. IVhile the invention has been described with particularreference to the details of construction, the same is not to beconsidered as limited thereto, as many changes can be made and still,fall within the scope of the invention set forth in the followingclaims. I claim 1. A duplicating machine comprising in combination adrum, a sheet of gelatinous material secured to the surface of said drumapresser roller, a feeding member on said drum arranged to be compressedby said -presser' roller, and stripping rollers 'for stripping the paperoff said gelatinous materia 2. A duplicating machine comprising incombination a drum, a sheet of gelatinous I material secured to thesurface of said drum, a presser roller for pressing the paper in contactwith said gelatinous material, stripping rollers for stripping the paperoff said gelatinous material, and a feeding member on said drum forfeeding said paper into the stripping rolls, said feeding member beingarranged to be compressed by said presser roller as it passes under thesame.

3. A duplicating machine comprising in combination a drum, 2. sheet ofgelatinous material secured to the surface of said drum, a presserroller for pressing the paper in contact with said gelatinous material,stripping rollers for stripping the paper off said gelatinous material,and a feeding member on said drum for feeding said paperinto thestripping rolls, said feeding member being arranged to be compressed bysaid presser roller as it passes under the same, and means on saidfeeding member for engaging said roller in starting position.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses. DAVID HYAMS.

Witnesses Lno J. Marry, PAUL H. Fmxnr.

